native: autogenerate nativehashes package

Ref.
#3402 (comment).

Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>

pkg/compiler/interop_test.go

@@ -610,7 +610,7 @@ func TestCallWithVersion(t *testing.T) {
 	e.DeployContract(t, ctr, nil)
 	c := e.CommitteeInvoker(ctr.Hash)
 
-	policyH := nativehashes.Policy
+	policyH := nativehashes.PolicyContract
 	t.Run("good", func(t *testing.T) {
 		c.Invoke(t, e.Chain.GetBaseExecFee(), "callWithVersion", policyH.BytesBE(), 0, "getExecFeeFactor")
 	})

pkg/core/blockchain_neotest_test.go

@@ -2461,7 +2461,7 @@ func TestBlockchain_GenesisTransactionExtension(t *testing.T) {
 	emit.Syscall(script.BinWriter, interopnames.SystemRuntimeCheckWitness)
 	emit.Bytes(script.BinWriter, to.BytesBE())
 	emit.Syscall(script.BinWriter, interopnames.SystemRuntimeCheckWitness)
-	emit.AppCall(script.BinWriter, nativehashes.Neo, "transfer", callflag.All, from, to, amount, nil)
+	emit.AppCall(script.BinWriter, nativehashes.NeoToken, "transfer", callflag.All, from, to, amount, nil)
 	emit.Opcodes(script.BinWriter, opcode.ASSERT)
 
 	var sysFee int64 = 1_0000_0000

pkg/core/native/native_test/management_test.go

@@ -171,7 +171,7 @@ func TestManagement_NativeDeployUpdateNotifications(t *testing.T) {
 		switch name {
 		case nativenames.Gas:
 			expected = append(expected, state.NotificationEvent{
-				ScriptHash: nativehashes.Gas,
+				ScriptHash: nativehashes.GasToken,
 				Name:       "Transfer",
 				Item: stackitem.NewArray([]stackitem.Item{
 					stackitem.Null{},
@@ -181,7 +181,7 @@ func TestManagement_NativeDeployUpdateNotifications(t *testing.T) {
 			})
 		case nativenames.Neo:
 			expected = append(expected, state.NotificationEvent{
-				ScriptHash: nativehashes.Neo,
+				ScriptHash: nativehashes.NeoToken,
 				Name:       "Transfer",
 				Item: stackitem.NewArray([]stackitem.Item{
 					stackitem.Null{},
@@ -191,7 +191,7 @@ func TestManagement_NativeDeployUpdateNotifications(t *testing.T) {
 			})
 		}
 		expected = append(expected, state.NotificationEvent{
-			ScriptHash: nativehashes.Management,
+			ScriptHash: nativehashes.ContractManagement,
 			Name:       "Deploy",
 			Item: stackitem.NewArray([]stackitem.Item{
 				stackitem.Make(state.CreateNativeContractHash(name)),
@@ -208,7 +208,7 @@ func TestManagement_NativeDeployUpdateNotifications(t *testing.T) {
 	expected = expected[:0]
 	for _, name := range []string{nativenames.CryptoLib, nativenames.Neo} {
 		expected = append(expected, state.NotificationEvent{
-			ScriptHash: nativehashes.Management,
+			ScriptHash: nativehashes.ContractManagement,
 			Name:       "Update",
 			Item: stackitem.NewArray([]stackitem.Item{
 				stackitem.Make(state.CreateNativeContractHash(name)),

pkg/core/native/nativehashes/gen.go

@@ -0,0 +1,70 @@
+//go:build ignore
+
+// This program generates hashes.go. It can be invoked by running
+// go generate.
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"text/template"
+
+	"github.com/nspcc-dev/neo-go/pkg/core/native/nativenames"
+	"github.com/nspcc-dev/neo-go/pkg/core/state"
+)
+
+// srcTmpl is a nativehashes package template.
+const srcTmpl = `// Code generated by "go generate go run gen.go"; DO NOT EDIT.
+
+//go:generate go run gen.go
+
+// package nativehashes contains hashes of all native contracts in their LE and Uint160 representation.
+package nativehashes
+
+import "github.com/nspcc-dev/neo-go/pkg/util"
+
+// Hashes of all native contracts.
+var (
+{{- range .Natives }}
+	// {{ .Name }} is a hash of native {{ .Name }} contract.
+	{{ .Name }} = {{ .Hash }}
+{{- end }}
+)
+`
+
+type (
+	// Config contains parameters for the nativehashes package generation.
+	Config struct {
+		Natives []NativeInfo
+	}
+
+	// NativeInfo contains information about native contract needed for
+	// nativehashes package generation.
+	NativeInfo struct {
+		Name string
+		Hash string
+	}
+)
+
+// srcTemplate is a parsed nativehashes package template.
+var srcTemplate = template.Must(template.New("nativehashes").Parse(srcTmpl))
+
+func main() {
+	f, err := os.Create("hashes.go")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer f.Close()
+
+	var cfg = Config{Natives: make([]NativeInfo, len(nativenames.All))}
+	for i, name := range nativenames.All {
+		var hash = state.CreateNativeContractHash(name)
+		cfg.Natives[i] = NativeInfo{
+			Name: name,
+			Hash: fmt.Sprintf("%#v", hash),
+		}
+	}
+
+	srcTemplate.Execute(f, cfg)
+}

pkg/rpcclient/gas/gas.go

@@ -13,7 +13,7 @@ import (
 )
 
 // Hash stores the hash of the native GAS contract.
-var Hash = nativehashes.Gas
+var Hash = nativehashes.GasToken
 
 // NewReader creates a NEP-17 reader for the GAS contract.
 func NewReader(invoker nep17.Invoker) *nep17.TokenReader {

pkg/rpcclient/management/management.go

@@ -75,7 +75,7 @@ type HashesIterator struct {
 }
 
 // Hash stores the hash of the native ContractManagement contract.
-var Hash = nativehashes.Management
+var Hash = nativehashes.ContractManagement
 
 // Event is the event emitted on contract deployment/update/destroy.
 // Even though these events are different they all have the same field inside.

pkg/rpcclient/neo/neo.go

@@ -97,7 +97,7 @@ type ValidatorIterator struct {
 }
 
 // Hash stores the hash of the native NEOToken contract.
-var Hash = nativehashes.Neo
+var Hash = nativehashes.NeoToken
 
 // NewReader creates an instance of ContractReader to get data from the NEO
 // contract.

pkg/rpcclient/oracle/oracle.go

@@ -31,7 +31,7 @@ type Actor interface {
 }
 
 // Hash stores the hash of the native OracleContract contract.
-var Hash = nativehashes.Oracle
+var Hash = nativehashes.OracleContract
 
 const priceSetter = "setPrice"
 

pkg/rpcclient/policy/policy.go

@@ -33,7 +33,7 @@ type Actor interface {
 }
 
 // Hash stores the hash of the native PolicyContract contract.
-var Hash = nativehashes.Policy
+var Hash = nativehashes.PolicyContract
 
 const (
 	execFeeSetter      = "setExecFeeFactor"

pkg/rpcclient/rolemgmt/roles.go

@@ -31,7 +31,7 @@ type Actor interface {
 }
 
 // Hash stores the hash of the native RoleManagement contract.
-var Hash = nativehashes.Designation
+var Hash = nativehashes.RoleManagement
 
 const designateMethod = "designateAsRole"
 

pkg/services/oracle/response.go

@@ -119,7 +119,7 @@ func (o *Oracle) CreateResponseTx(gasForResponse int64, vub uint32, resp *transa
 	oracleSignContract := o.getOracleSignContract()
 	tx.Signers = []transaction.Signer{
 		{
-			Account: nativehashes.Oracle,
+			Account: nativehashes.OracleContract,
 			Scopes:  transaction.None,
 		},
 		{
@@ -174,7 +174,7 @@ func (o *Oracle) testVerify(tx *transaction.Transaction) (int64, bool, error) {
 	ic.VM.GasLimit = o.Chain.GetMaxVerificationGAS()
 
 	o.oracleInfoLock.RLock()
-	ic.VM.LoadScriptWithHash(o.oracleScript, nativehashes.Oracle, callflag.ReadOnly)
+	ic.VM.LoadScriptWithHash(o.oracleScript, nativehashes.OracleContract, callflag.ReadOnly)
 	ic.VM.Context().Jump(o.verifyOffset)
 	o.oracleInfoLock.RUnlock()
 

pkg/services/rpcsrv/client_test.go

@@ -826,7 +826,7 @@ func TestCalculateNetworkFee(t *testing.T) {
 		require.NoError(t, err)
 
 		// Set fee per Conflicts attribute.
-		script, err := smartcontract.CreateCallScript(nativehashes.Policy, "setAttributeFee", byte(transaction.ConflictsT), conflictsFee)
+		script, err := smartcontract.CreateCallScript(nativehashes.PolicyContract, "setAttributeFee", byte(transaction.ConflictsT), conflictsFee)
 		require.NoError(t, err)
 		txSetFee := transaction.New(script, 1_0000_0000)
 		txSetFee.ValidUntilBlock = chain.BlockHeight() + 1